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Information transfer through food from parents to offspring in wild Javan gibbons

Title
Information transfer through food from parents to offspring in wild Javan gibbons
Authors
Yi Y.Kim Y.Hikmat A.Choe J.C.
Ewha Authors
최재천
SCOPUS Author ID
최재천scopus
Issue Date
2020
Journal Title
Scientific Reports
ISSN
2045-2322JCR Link
Citation
Scientific Reports vol. 10, no. 1
Publisher
Nature Research
Indexed
SCIE; SCOPUS scopus
Document Type
Article
Abstract
The adaptive functions of food transfer from parents to their offspring have been explained mainly by two mutually non-exclusive hypotheses: the nutritional and informational hypotheses. In this study, we examined the functions of food transfer in wild Javan gibbons (Hylobates moloch) by testing these hypotheses from both infants’ and mothers’ perspectives. We observed 83 cases of food solicitations that resulted in 54 occasions of food transfers in three groups over a 19-month period in Gunung Halimun-Salak National Park, Indonesia. Infants initiated all solicitations directed at their mothers with one solicitation towards a father. Food solicitation rate decreased as infant age increased and ceased before weaning. As predicted by the informational hypothesis, infants solicited more food items difficult to obtain and preferred by their parents. On the contrary to the nutritional hypothesis, infants solicited low-quality items more often than high-quality items. Mothers did not change probability of food transfer according to the food characteristics or infant age. Hence, our results suggest that the primary function of food transfer from mother to infant Javan gibbons seems to be information transfer rather than nutritional aids, similarly to great apes. © 2020, The Author(s).
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DOI
10.1038/s41598-019-57021-6
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자연과학대학 > 생명과학전공 > Journal papers
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